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WV. J. CLARKE. ELECTRIC ANNUNGIATOR.

No. 542,926. l Patented July A16, 1895.

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W. J. CLARKE.

ELECTRIC ANNUNGIATOR.

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WILLIAM J. CLARKE, OF TRENTON, CANADA.

ELECTRIC AN NUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 542,926, dated July 16, 1895. Application nea raam 5,1895. serai No. 537,366. No modem To all whom it may concern;

' Be it known that I, WILLIAM J. CLARKE, a citizen of Canada, residing at Trenton, in the county of Hastings and Province of Ontario,

Canada, have invented a new and Improved Electric Ann'unciator and Return Call, of which the following is a specification.

My invention is intended to apply to all electric call-bell systems that require more than ten indications, and by its use eleven connecting-wires are required for the rst ten rooms, after which only one additional Wire is required for every ten rooms up to onehundred rooms, and after that only one additional wire for every one hundred rooms.

My annunciator is provided with the usual electric alarm-bell; but instead of being pro vided with the usual separate indication for each room it only requires one indication for each of the connecting-wires-that is to say, eleven indicationsfor the tirst ten rooms connected and one more indication for each additional ten rooms up lto one hundred rooms, after which but one indication is required for each additional one hundred rooms.

The annunciator-face is provided with drops or indications which do not correspond in number to the rooms, but are arranged in segreg-ated groups arranged decimally-that is to say, one group of ten representing units,

another group representing tens, and another representing hund reds, dac-whereby the number of any one room is indicated in acollective manner by the falling ot a drop in two or more of the groups. Thus room 125 would be indicated by the falling of drop 1 in hundreds group, drop v2 in tens group, and drop 5 in units group, all of which are operated by the single push-button of that room. By this arrangement only thirty drops are required for one thousand rooms and a great saving is eiected in the size and mechanical structure of the annunciator and in the wiring and labor of construction.

Figure l is a face view of an annunciator constructed vfor one thousand rooms, the wiring being shown for two hundred rooms. Fig. 2 is a similar view showing the application ot the return-call, but in an annunciator having only two groups of dropsor onearranged for one hundred rooms. Fig.2 is a detail showing the connections of the return-call keys;

Fig. 2b, the connections in each room; and

Fig. 3 is an enlarged view of the bell used for each room for the return-call.

In the accompanying drawings, A in Fig.1 is the annunciator, having the usual alarmbell C. The case ot the annunciatoris made of a size to provide tor two rows or sections of indication if the number of rooms to be connected does not exceed one hundred and of a size to provide for three rows or sections of indications if the number of rooms is more than one hundred, as shown, and not more than one thousand. The lower or unit row E contains the indications numbered respectively O 1 2 3 4 5 6 '7 S 9. The second or tens row F contains one indication numbered 0 if but ten rooms are to be connected, two indications numbered O and l for twenty rooms,

three indications numbered 0,1, and 2 forA thirty rooms, and so on, adding one indica. tion for each additional ten rooms and numbering the same one unit higher than the number of the last indication. In like man- -ner the third or hundreds row (which, as exnet in the lower or units row E is connected to one common or trunk wire M,which is con.- nected through the bell C with one pole of the battery B. The'other pole of battery B is connected to a common or trunk wire K, which is in turn connected to one end of the wire on each of the indication-magnets in the second or tens row F, and through a trunklwire K to the magnets of the third or hundreds row Gr. The other side ot the magnets in each row is connected to the push-buttonsin the'rooms, as shown, said push-buttons being numbered 0 to 99 for the rooms connecting with the two series E and F, and O to 199 for the rooms connected'with the two series E and F and the first drop 1 of the hun- IOC dreds series G, ordinary or two-point pushbuttons being used in all rooms up to and including 99, and three-point push-buttons being used in all rooms above that number. It will be clearly seen that if, say, push-button 59 is pressed the current from battery B will travel along wire K to indication 5, in second or tens row, through indication 5 and along wire 51" to push-button 59, through push-button 59 and along branch wire 9e to wire 9E to indication 9 in lower or units row, through indication 9 and along wire M to the bell C and to the other pole of battery B. It will thus be seen that pressing button 59 will ring bell C and operate indication 5 in the second or tens row and indication 9 in the lower or units row, thus clearly indicating thatbutton 59 has been pressed. In like manner if button 127 is pressed the current will travel from battery B, dividing at point where part goes through wire K and indication 1 in the third or hundreds row along wire 1(1 to pushbutton 127, through push -button 127 and along wire 7E to indication 7 in loweror units row, through indication 7 and back to battery B through wire M and the bell-magnets C. The other part of the current, which divides at goes through indication 2 in the second or tens row, thence along wire 2F to push-button 127, through push-button 127 and returns along wire 7E to indication 7 in lower or units row, through indication 7 and back to battery by Wire M and the bell-magnets.

, It will then be readily seen that pressing that the figures be black printed on white,

and that the frontof the annunciator, through the openings in which the numbers show, be as dark a color as possible.

It is readily seen that needles or any other style or kind of indication may be used, and

that it is not necessary that the two or three rows of indications be arranged one above the other, but that any arrangement of these sets of numbers that will enable the attendant to distinguish between the units, tens, and hundreds is all that is required. It is necessary, however, that the indicator-face of the annunciator should have its drops arranged in decimal series or groups with the units segregated from the tens and hundreds, the tens from the units and hundreds, and the hundreds from the units and tens.

My invention also comprehends a returncall and lire-alarm system, and for this it is only necessary to provide in connection with my annunciator ten additional connectingwires for each hundred rooms, a relay bell, Fig. 3, for each room, and a return-call board having twenty open and close circuits-buttons for the first hundred rooms, and ten more ditto for each additional hundred rooms, also one additional battery for entire return-call and fire-alarm.

For the sake of simplicity my improved return-call and fire-alarm arrangement is shou n in Fig. 2 in connection with an annunciator having only two series of drops, in which N is the return-call board, which is usually placed convenient to or arranged to form a part of the annunciator,and is connected in the manner shown.

The push-buttons F on the lelt represent the teus ot' the return-call, and those E on the right represent tho units. The pushbuttons on the let't F are connected to the rooms by wires Wo W W2 W3 f4 W5, tbc. The connections ot' these wires in the rooms is shown in Fig. 2b, in which R is a relay that is placed in a branch wire connecting one of the return-call wires W5, as shown, to the series of wires F 5F, as shown. For ordinary calling from the room the series of wires E 9E and F 5F are connected by the push-button P. For the return-call these series of wires are connected through the circuit ct h c r by the agency of the return-call wire W5 and relay R, Whose armature c puts the bell b in circuit by bringing armature c against contact rand causing the current to flow from 9E through a, the bell-magnets at b, armature c, contact r, and wire 5F whenever relay R is energized through the return-call wire W5.

The connections of the tens push-buttons F of the return-call are shown in Fig. 2, Each spring push-button F has a lower contact-bearing F3 connected to its own returncall Wire WV, 74, and W5, as shown, while its upper contact F2 is connected to the adjacent push-button, forming an unbroken circuit M, but when a push-button F is depressed the circuit M is broken between the push-buttons and is made to [low ont through one ol' the return-call wires W4 or W5, the.

Suppose it is required to ring the bell in room 59, the operator Will press return-call push-button 5 on the left or tens side of the board and 9 on the right or units side ol' the board. When push-button 5 on the left is pressed, the current from battery B through wire M is broken at the upper contact FQand Hows to Wire W5 and through the same to rooms 50 to 59, inclusive, dividing in each ol said rooms and passing through therelaymagnets R to wire 5F, returning by said wire to battery B through indication 5 in the tensrow F. This, it will be seen, energizes the magnets R and causes their armatures c to put the bell b in circuit between the wires 9 and 5F in each of the ten rooms. The bell C ot1 the annunciator on one side is connected through a wire M2 to a metal bar E above the keys E', and against which the latter normally lie, and on the other side the bell is connected by wire M with the series of keys F. When the key 9 in the units series i" is pressed, wire e2 is disconnected from bar E2, wire M2,- and bell C and connected to the battery B2 by a wire B2. .It will thus be seen that the current from battery B2 is caused to tlow through Wire B3, key 9E', wire e2, indication 9 in E or units series of drops, wire 9E, bell in room 59, relay-contact fr, wire 5F, indication 5 in the F or tens series, and to return to its other pole by wire K. This, it will be seen, will cause bell in room 59 to vibrate, and as said vibrations of current pass through indication 9.in the units-row the armature of this indication is also caused to vibrate and produce a buzzing sound, which ceases when the occupant of room 59 presses button 59, and thus short-circuits bell 59 and causes its vibrations to cease, thus indicating that the call has been answered.

In Fig. 3 I show a form of return-call bell which I have devised for use with my annunciator and which is necessary to its successful use.

When a return-call 5, key F, is pressed, the cur-rent enters by return-call wire at post S, goes through relay-magnet R, and out by post T to wire F. When return-call E is pressed, key F' being stillkept down, battery-current B2 enters by wire F at post T, follows wire F to magnet-spools Y of bell, goes through magnet-spools and by wire g to relay-armature R. This armature is made of tin or light iron and `is pivoted to the square piece of insulation which forms one head of relay-magnet R. From armature R the current goes to relay-magnet core Z, thence to spring f, and.

insulated split post c2, fm'a platinum points c',

and thence to post V and wire E da. wire c2.

When it is necessary on account ot tire or for any lother reason to ring all of the bells connected with the annunciator, it is only necessary to press button H and then ring ten bells at a time by pressing in succession each of the ten buttons on the left-hand or tens button;

Having thus describedmy invention, what I claim as new, and desire to secure by Letters Patent, is- ,Y

1. An electric annunciator having its face provided with drops or indications segregated decimally into groups of ten each,represent ing different denominations for the dil't'erent groups; in combination with a' series of ten unit wires leading from one group of drops to all the rooms, but having one set of branches leading to the rst hundred rooms and another set of branches leading to the second hundred rooms and so on another series of ten wires leading from the tens series ofA drops to all the rooms, a third single wire leading from each of the third or hundreds 7 series to each of the groups 'of one hundred 'rooms after the first hundred rooms, a

battery and a bell substantially as and for the purpose described.

2. In an electric annunciator, the combination of a face provided with drops or indications segregated decimally into groups of ten each representing different denominations for the different groups, and the groups having wires running to the separate rooms as shown and described; relay bells arranged in each room, a set of return call keys segregated decimally into groups of ten each representing dierent denominations, one of said groups having a separate set of return call wires running t'o the rooms, the other set of return call keys being connected with the rooms through the circuits of the annunciator drops, a battery for the indicator drop circuits and relays, a separate battery for the return call circuit and room bells, the bell for each room being provided with a relay arranged in the circuit trolling the bell ringing circuit through the other two posts by the action of said relay substantially as and for the purpose described.

4c. The combination with the two batteries B and B2 and their circuitwires M2 and B3, the return call keys F and E', the tire alarm switch or push button I-I connecting the cir.- cuits M2 and B2, and the relays, and alarm bells in the rooms, and circuit wires leading thereto substantially as and for the purpose described.

VILLIAM J. CLARKE.

Witnesses:

EDWD. W. BYRNE, SoLoN C. KEMoN.

ICO 

